Magin riera



(No Model.)

M. RIERA. INSULATOR FOR ELECTRIC WIRES.

No. 554,955. Patented Feb. 18, 1896.

INVENTOH' V ATTORNEYS.

WITNESSES:

UNITED STATES PATENT OEEIcE.

MAGIN RIERA, or HAVANA, CUBA.

INSULATOR FOR ELECTRIC WIRES.

SPECIFICATION forming part of Letters Patent N0. 554,955, dated February 18, 1896.

A li ation fil d eptember 5, 1895. Serial No. 561,491. (No model.)

To all whom, it may concern:

Be it known that I, MAGIN RIERA, of Havana, Cuba, have invented a new and Improved Insulator for Electric Wires, of which the following is a full, clear, and exact description.

My invention relates to insulators for electric wires, and has for its object to prevent the humming noise caused by the vibrations of such wires when they are fastened to poles or other supports.

To this end my invention consists of the features of construction and combinations of parts hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of a post having my improved insulator attached thereto. Figs. 2 and 3 are a side elevation and a front elevation, respectively, of one of the main parts of the insulator. Figs. 4 and5 are similar views of the lower part of the insulator; and Figs. 6, 7, and 8 are a side elevation, a front elevation, and a plan, respectively, of the central elastic portion of the insulator.

As illustrated in the drawings, the insulator consists chiefly of three parts, of which the two main parts A and B are substantially L shaped, so as to inclose between them a space adapted to receive the central elastic piece 0, which is apertured for the reception of the wire D. The upper piece, A, comprises avertical member A, having a bolt-aperture A and a horizontal member A having a like aperture A The horizontal inner side of the member A is substantially plane. The other main member, B, is similar to the member A, being provided with the vertical member B, apertured at B and a horizontal member 13 apertured at B, the apertures A and B in the parts A and B being provided for the reception of thebolts E. The inner face of the horizon-- tal member B is convexed upwardly, as will be seen best in Fig. 4, for a purpose presently to be stated. The contacting-surfaces of vertical member A and of the horizontal member B are also convexed and concaved respectively or formed respectively with a wedgeshaped projection and a corresponding recess, as shown.

It will be understood that the two L-shaped pieces A and B inclose between them a substantially prismatical space, and this space is adapted to receive the elastic filling O. (Illustrated in Figs. 6, 7 and 8.) Said fillingis slotted in its upper surface to approximately its center, as shown at O, and has its lower surface concaved, as shown at O to correspond to the convexity of the inner surface of the member B The manner of connecting the parts will be obvious from Fig. 1. The part B is first secured to the post or other support F by means of the bolts E. Then the elastic filling O is inserted and placed upon the horizontal member B The wire D is then passed from above into the slot O, and finally the partAis placed upon and against the filling O and the part B, nuts being employed in the usual manner to hold the parts in this position. The filling O is usually made of india-rubber; but any other suitable elastic material may be employed. It will be understood that the parts A and B also constitute a clamp which will cause the split portion of the filling-piece to closely hug the wire. The convex portion on the lower member of the piece B, and the corresponding formation of the filling-piece C, is to prevent the said filling-piece from slipping out from between the parts A and B in the direction of the wire. The interlocking recess and projection on the horizontal member B and on the vertical member A respectively also serve as an additional means of preventing any movement of the part A on the part B in the direction of the wire, and, further, will guide the said parts to the proper relative position when they are put together.

It will be understood that any vibrations of the wire caused by wind will be deadened by the elastic filling-piece O and will not be transmitted to the support F.

My invention has been thoroughly tested and it has been found to fully accomplish its object with some fifty wires placed so close to each other as to almost touch one another.

The invention is extremely simple and may be readily applied and also readily taken to pieces if it should be found necessary to insert a new wire or a new filling-piece.

The insulation is effected by the filling C; but it will be understood that if desired the parts A and B could be made of insulating material, in which case the elastic filling-piece need not be a non-conductor of electricity.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The herein-described insulator for electric wires, comprising two clamp members, one L-shaped and the other of inverted-L shape so as to inclose between them a substantially prismatical space, the horizontal portion of one member and the vertical portion of the other member being provided at their contiguous surfaces with a projection and a recess engaged thereby, and an elastic filling held in the said prismatical space and apertured for the reception of the wire, substantially as set forth.

2. An insulator for electric wires, comprising two essentially L-shaped clamp members inclosing between them a space open at both ends, one of the clamp members having a convex inner surface, and an elastic filling provided with a concave surface corresponding to the convex surface of the clamp member and with an aperture for the reception of a wire, substantially as described.

The herein-described insulator for electric Wires, comprising two clamp n1embers,onc L-shaped and the other of inverted-L shape so as to inclose between them a substantially prismatical space, and an elastic filling held in the said space and apertured for the reception of the wire, substantially as described.

MAGIN RIIGRA. lVitnesses:

JOSEPH A. Srn'monn, Gonens ALBERTSIN. 

